Measurement of the elasticity modulus of soft tissues.

Measurement of the elasticity modulus of soft tissues.
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软组织弹性模量的测量

DOI:
10.1016/j.jbiomech.2010.01.035
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发表时间:
2010
影响因子:
2.4
通讯作者:
M. Döllinger
M. Döllinger
中科院分区:
工程技术3区
文献类型:
--
作者:
B. S. Zörner;M. Kaltenbacher;R. Lerch;A. Sutor;M. Döllinger

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提出了与有限元 (FE) 模拟相结合的测量装置,以确定软材料的弹性模量作为频率的函数。这项工作的长期目标是在与人类发声范围一致的频率范围内体外测量人类声带的弹性模量。结果将通过提供正确的材料参数来帮助对发声过程进行数值模拟。此外,测量是局部应用的,能够确定沿材料表面的空间差异。在这项工作中,该方法将通过将其应用于具有与人类声带相似特性的有机硅来介绍和验证。在 20-250Hz 的频率范围内测试了三种不同稠度的硅胶样品。移液管抽吸法的结果显示弹性模量具有很强的频率依赖性,特别是在 100Hz 以下。在此频率范围内,样品的弹性模量在 5 至 27kPa 之间变化。
A measurement setup combined with a Finite Element (FE) simulation is presented to determine the elasticity modulus of soft materials as a function of frequency. The longterm goal of this work is to measure in vitro the elasticity modulus of human vocal folds over a frequency range that coincides with the range of human phonation. The results will assist numerical simulations modeling the phonation process by providing correct material parameters. Furthermore, the measurements are locally applied, enabling to determine spatial differences along the surface of the material. In this work the method will be presented and validated by applying it to silicones with similar characteristics as human vocal folds. Three silicone samples with different consistency were tested over a frequency range of 20–250Hz. The results of the pipette aspiration method revealed a strong frequency dependency of the elasticity modulus, especially below 100Hz. In this frequency range the elasticity moduli of the samples varied between 5 and 27kPa.
DOI: --
发表时间: 2008
期刊:
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期刊: The Journal of the Acoustical Society of America
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